. our chief white house correspondent jessica yellin has been working her sources about his debate preparations. jessica, what is his primary goal tonight? >> reporter: hi, wolf. according to democratic sources for the vice president the number one goal is to make the compelling case for the president's plans and his vision on the economy. yes, he will look for openings to bring up the 47%. yes, he will look for openings to talk about paul ryan's budget. the idea in general is to tie governor mitt romney -- sorry, tie governor romney to the ryan budget. and as one top democrat put it to me, the idea is to make the case that romney/ryan in electing that ticket means americans would be electing the intellectual leader of the house republicans, as one person put it, that paul ryan is the intellectual leader of the house republicans and he should not be able tonight to duck from any specifics. so, again, we will hear that word, specifics. and look for the vice president to try to get paul ryan to talk about budget details in this debate tonight, wolf. >> jessica, has the vice president